JPH0590974A - 前反響処理方法およびその装置 - Google Patents

前反響処理方法およびその装置

Info

Publication number
JPH0590974A
JPH0590974A JP4071461A JP7146192A JPH0590974A JP H0590974 A JPH0590974 A JP H0590974A JP 4071461 A JP4071461 A JP 4071461A JP 7146192 A JP7146192 A JP 7146192A JP H0590974 A JPH0590974 A JP H0590974A
Authority
JP
Japan
Prior art keywords
sample
noise
signal
energy
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP4071461A
Other languages
English (en)
Japanese (ja)
Inventor
Yannick Mahieux
ヤニツク・マイユー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orange SA
France Telecom R&D SA
Original Assignee
France Telecom SA
Centre National dEtudes des Telecommunications CNET
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by France Telecom SA, Centre National dEtudes des Telecommunications CNET filed Critical France Telecom SA
Publication of JPH0590974A publication Critical patent/JPH0590974A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0255—Filters based on statistics
    • H03H17/0257—KALMAN filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Probability & Statistics with Applications (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
JP4071461A 1991-03-27 1992-03-27 前反響処理方法およびその装置 Withdrawn JPH0590974A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103715A FR2674710B1 (fr) 1991-03-27 1991-03-27 Procede et systeme de traitement des preechos d'un signal audio-numerique code par transformee frequentielle.
FR9103715 1991-03-27

Publications (1)

Publication Number Publication Date
JPH0590974A true JPH0590974A (ja) 1993-04-09

Family

ID=9411189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4071461A Withdrawn JPH0590974A (ja) 1991-03-27 1992-03-27 前反響処理方法およびその装置

Country Status (7)

Country Link
US (1) US5311549A (de)
EP (1) EP0506535B1 (de)
JP (1) JPH0590974A (de)
CA (1) CA2063954A1 (de)
DE (1) DE69206300T2 (de)
ES (1) ES2081583T3 (de)
FR (1) FR2674710B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8615090B2 (en) 2009-01-05 2013-12-24 Samsung Electronics Co., Ltd. Method and apparatus of generating sound field effect in frequency domain

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687871B1 (fr) * 1992-02-25 1995-07-07 France Telecom Procede et dispositif de filtrage pour la reduction des preechos d'un signal audio-numerique.
JPH06112909A (ja) * 1992-09-28 1994-04-22 Sony Corp 改良ｄｃｔの信号変換装置
JP3277682B2 (ja) * 1994-04-22 2002-04-22 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法
US5801652A (en) * 1994-07-08 1998-09-01 Cirrus Logic, Inc. Pattern dependent noise reduction in a digital processing circuit utilizing image circuitry
US5719572A (en) * 1994-07-08 1998-02-17 Cirrus Logic, Inc. Digital signal processor with reduced pattern dependent noise
GB2327577B (en) 1997-07-18 2002-09-11 British Broadcasting Corp Re-encoding decoded signals
FR2802041A1 (fr) * 1999-12-07 2001-06-08 Koninkl Philips Electronics Nv Methode de detection de blocs pour canal soumis a evanouissement
US7711123B2 (en) * 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
DK1386312T3 (da) * 2001-05-10 2008-06-09 Dolby Lab Licensing Corp Forbedring af transient ydeevne af audio kodningssystemer med lav bithastighed ved reduktion af forudgående stöj
US8171303B2 (en) * 2004-11-03 2012-05-01 Astav, Inc. Authenticating a login
KR20080097178A (ko) * 2006-01-18 2008-11-04 연세대학교 산학협력단 부호화/복호화 장치 및 방법
RU2481650C2 (ru) * 2008-09-17 2013-05-10 Франс Телеком Ослабление опережающих эхо-сигналов в цифровом звуковом сигнале
CN101527139B (zh) * 2009-02-16 2012-03-28 成都九洲电子信息系统股份有限公司 一种音频编码解码方法及其装置
JP6039678B2 (ja) * 2011-10-27 2016-12-07 エルジー エレクトロニクス インコーポレイティド 音声信号符号化方法及び復号化方法とこれを利用する装置
FR2992766A1 (fr) * 2012-06-29 2014-01-03 France Telecom Attenuation efficace de pre-echos dans un signal audionumerique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806416A1 (de) * 1988-02-29 1989-09-07 Fraunhofer Ges Forschung Verfahren zur reduzierung sog. vorechos bei der uebertragung und/oder speicherung von akustischen signalen
US5079621A (en) * 1990-06-29 1992-01-07 Eastman Kodak Company Dct transform compression, transmission and recovery of digital color using virtual filtering mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8615090B2 (en) 2009-01-05 2013-12-24 Samsung Electronics Co., Ltd. Method and apparatus of generating sound field effect in frequency domain

Also Published As

Publication number Publication date
FR2674710A1 (fr) 1992-10-02
CA2063954A1 (en) 1992-09-28
ES2081583T3 (es) 1996-03-16
EP0506535B1 (de) 1995-11-29
DE69206300D1 (de) 1996-01-11
FR2674710B1 (fr) 1994-11-04
US5311549A (en) 1994-05-10
EP0506535A1 (de) 1992-09-30
DE69206300T2 (de) 1996-04-18

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Legal Events

Date Code Title Description
A300 Application deemed to be withdrawn because no request for examination was validly filed

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19990608